class Phone:
    IMEI = None
    producer = "xiaomi"

    def call_by_5g(self):
        print("父类的5g通话")


class MyPhone(Phone):
    producer = "huawei"

    def call_by_5g(self):
        print(f"父类的品牌是：{Phone.producer}")
        Phone.call_by_5g(self)

        print("-----------------")
        print(f"父类的品牌是：{super().producer}")
        super().call_by_5g()


phone = MyPhone()
phone.call_by_5g()
